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namespace.ts
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namespace.ts
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/* Copyright (c) 2020 SAP SE or an SAP affiliate company. All rights reserved. */
import {
FunctionDeclarationStructure,
NamespaceDeclarationStructure,
StructureKind
} from 'ts-morph';
import { VdmComplexType, VdmProperty } from '../vdm-types';
export function complexTypeNamespace(
complexType: VdmComplexType
): NamespaceDeclarationStructure {
return {
kind: StructureKind.Namespace,
name: complexType.typeName,
isExported: true,
statements: [factoryFunction(complexType)]
};
}
function factoryFunction(
complexType: VdmComplexType
): FunctionDeclarationStructure {
return {
kind: StructureKind.Function,
name: 'build',
returnType: complexType.typeName,
parameters: [{ name: 'json', type: getJsonType(complexType) }],
statements:
'return createComplexType(json, ' + getConverter(complexType) + ');',
isExported: true
};
}
function getJsonType(complexType: VdmComplexType): string {
return '{ [keys: string]: FieldType }';
}
function getConverter(complexType: VdmComplexType): string {
return (
complexType.properties.reduce((converter, currentProperty) => {
if (converter !== '{\n') {
converter += ',\n';
}
converter += `${currentProperty.originalName}: (${
currentProperty.instancePropertyName
}: ${currentProperty.jsType}) => ({ ${
currentProperty.instancePropertyName
}: ${getConverterFunction(currentProperty)} })`;
return converter;
}, '{\n') + '\n}'
);
}
function getConverterFunction(property: VdmProperty): string {
return property.isComplex
? `${property.jsType}.build(${property.instancePropertyName})`
: `edmToTs(${property.instancePropertyName}, '${property.edmType}')`;
}